Roof cover fastener



FIG. 1 is a front perspective view showing the new, original, and ornamental design of a roof cover fastener;

FIG. 2 is a right side elevation view thereof, the left side, front side, and rear side elevation views all being a mirror image of the right side elevation view;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

CLAIM The ornamental design for a roof cover fastener, as shown and described. 